spark 2.0.0 开始
SparkSession spark = SparkSession .builder() .master("Local") .appName("JavaWordCount") .getOrCreate();
16/09/10 09:41:27 ERROR SparkContext: Error initializing SparkContext. java.lang.IllegalArgumentException: System memory 259522560 must be at least 471859200. Please increase heap size using the --driver-memory option or spark.driver.memory in Spark configuration. at org.apache.spark.memory.UnifiedMemoryManager$.getMaxMemory(UnifiedMemoryManager.scala:212) at org.apache.spark.memory.UnifiedMemoryManager$.apply(UnifiedMemoryManager.scala:194) at org.apache.spark.SparkEnv$.create(SparkEnv.scala:308) at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:165) at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:259) at org.apache.spark.SparkContext.(SparkContext.scala:423
